The data below gives the number of pages, x, and the cost, y, for a sample of six textbooks. Note that the data given in this problem is not necessarily the same as in the other problems.

#pages, x [ 849, 499, 538, 615, 599, 652]

cost, y [$196, $119, $135, $170, $153, $180]

Find the equation of the regression line, y = ax + b, for the data. Round the values of a and b to the nearest thousandth.